Flow Cytometry Based Screening System for Finding and Improving Bioindustrial Important Biocatalysts - Cytochrome P450 BM3
- Directed evolution presents one of the most common ways of tailoring biocatalysts for a certain application, especially when the information about the structure of biocatalyst is lacking. It consists of iterative cycles of diversity generation, on genetic level, and screening for the target property using a specific screening system. One of the bottlenecks of directed evolution experiment is the throughput of currently available screening systems. Recently, a new technology based on double emulsions and flow cytometry/FACS enabled screening for the enzyme activity with ultra high throughput (10[to the power]9 clones per round of directed evolution). In this work, we have optimized this technology for directed evolution of bacterial enzyme, Cytochrome P450 BM3.